Globe cap



Sept 1, 1925.

E. LASKOWSKI GLOBE CAP Filed Jun. 2, 1924 f. as/ro wsh' INVENTORATTORNEY Patented Sept. 1, 1925.

a. i l p 1,551,756.

=EDWIN LASKOWSKL'OF SOUTH BEND, INDIANA- GLOBE an.

' Application filed J'une z,

T 0 all whom it may canoe-m."

Be it known that I, EDWIN LASKOWSKI, a citizen of the United States,residing at South Bend, in the county of Saint Joseph and State ofIndiana, have invented new and useful Improvements in Globe Caps, ofwhich the following is a specification.

This invention relates to improvements in electric lamps, the generalobject of the invention being to provide means for facilitating theplacing of the bulb in its socket and to eliminate the screwing action.

Another object of the invention is to so form the attaching means thatthe ordinary screw threaded socket can be used with the invention. r

This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts, to behereinafter fully described, illustrated in the accompanying drawingsand specifically pointed out in the appended erably staggered, as shownin Figures 1 and claims.

In describing my invention in detail, ref= erence 'will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which Figure 1is an enlarged sectional view through the cap part of the bulb.

Figure 2 is a view of the cap and bulb assembled.

Figure 3 is a section on line 33 of Figure 1. r

Figure f is a view of the spring latch member.

Figure 5 is a view of the cover thereof.

In these views, 1 indicates the cap and 2 the glass body of an electriclamp bulb, the cap usually being formed with threads so that it can bethreaded into an ordinary terminal socket. It is the object of myinvention to eliminate this screw action of the bulb into a socket andto providemeans wherebyrthe connection can be made by simply pressingthe bulb into a socket. In carrying out my invention I make the cap 1with a number of holes 3 which are pref- 2. A spring latch 4 isassociated with each hole, this latch being formed of a spring stripwhich is soldered orotherwise fastened to the'interior of the cap andwith its rounded projection o normally extendlng interior of the cap.

1924. Serial No. 717,373.

through the hole, as shown in full lines in Figure 1. This projection isformed by de pressing the metal of the strip a short distance from itsfree end, as shown in Figure 4.

Thus when the bulb with the improved cap thereon is pressed into asocket the spring latches will be forced inwardly, as shown in dottedlines in Figure l, as they ride over the threads in .the socket and theywillengage portions of the threads and thus hold the bulb in the socket.The bulb can be taken from the socket by pulling the same withsufficient force to cause the latch members to ride over the threads inthe socket.

In order to prevent the filling material which cements the cap to theglass body from interfering with the operation of the latch members Iprovide covers 6 for the latch members which are fastened to the with aflange 7 which is soldered or otherwise connected with the cap and thecover is formed with a tapered chamber 8 therein, one end of which isopen to receive the spring strip.

tioned that the projections on the latch These covers are so posimemberscan pass into the chambers 8 and thus permit the cap to be. pressed intothe socket or removed therefrom.

It will thus be seen that the improved lamp bulb can be easily andquickly placed in a socket or removed therefrom by simply pressing thebulb into the socket or pulling it from the same. By having the openingsstaggered the latch members will engage Each cover is provided differentportions of the thread in the socket and thus make a firm connection.

By this invention the screwing action necessary for placing a bulb in asocket and removing it from the socket is eliminated so that much timeis saved and bulbs can be removed from difiicult places by means of apole and a loop on the same,

such for instance in the ceilings of buildings, on signs and thelike.

It is thought from the foregoing description that the advantages andnovel features of my invention will be readily apparent.

I desire it to be understood that I may make changesrin the constructionand in the combination and arrangement of the several parts, providedthat such changes fall within the scope of the appended claims.

hat I claim is 1. An electric light bulb having a spring latch in itscap for engaging a portion of the thread of a socket, said cap having anopening therein through which the latch projects and a cover withinthecap for the lat-ch member.

2. An electric light bulb comprising a cap having an opening therein, aspring strip fastened to the interior of the cap and having a projectionthereon extending through the opening to engage a portion of the threadsin a socket and a plate having a chamber formed therein, connected withthe interior of the cap and enclosing the portion of the strip whichcarries the projection.

3. An electric light bulb comprising a cap having a plurality of holestherein arranged in staggered relation, a spring latch associated witheach hole and formed of a spring strip fastened to the interior of thecap and having a rounded projection extending through the hole and acover for each latch fastened to the interior of the cap.

In testimony whereof I afiix my signature.

EDWIN LASKOVVSKL

